How much sleep is needed varies from person to person, however there are generally bands with which most people will fall. How much sleep is need tends to vary in distinct patterns with age.
How do long do different age groups sleep?
- Babies sleep for about 17 hours each day, this gradually reduces until older children need between nine and ten hours of sleep
- Adults tend to sleep between 7 and 8 hours sleep
- The elderly tend to sleep about the same amount of time as adult sbut they generally hae a more fitful sleep.
There is a significant variation in sleep patterns, as well as perceived sleep patterns, while awake at night it can seem like the periods of sleep are long when in fact what is happening is that it is just the perception of sleep which is leading to the assumption that there is a large lack of sleep occuring. Also there can be misreporting of how many hours someone sleeps either by trying to impress others or simply because they are not properly keeping track of how long the are sleeping or even notice when they have dosed off.
What is the minimum that can be slept
Some people have been known to get by on very little sleep, as little as 3 hours a day, this seems to be something specific to that persons psyiology.
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